EP2948333A1 - Verfahren, vorrichtung und system zum betreiben einer fahrzeugkomponente eines fahrzeugs in abhängigkeit eines sicherheitszustands des fahrzeugs - Google Patents
Verfahren, vorrichtung und system zum betreiben einer fahrzeugkomponente eines fahrzeugs in abhängigkeit eines sicherheitszustands des fahrzeugsInfo
- Publication number
- EP2948333A1 EP2948333A1 EP14702443.4A EP14702443A EP2948333A1 EP 2948333 A1 EP2948333 A1 EP 2948333A1 EP 14702443 A EP14702443 A EP 14702443A EP 2948333 A1 EP2948333 A1 EP 2948333A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- vehicle component
- control device
- measured value
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K28/10—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle
- B60K28/14—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions responsive to conditions relating to the vehicle responsive to accident or emergency, e.g. deceleration, tilt of vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0007—Measures or means for preventing or attenuating collisions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/10—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines
- B60L50/16—Electric propulsion with power supplied within the vehicle using propulsion power supplied by engine-driven generators, e.g. generators driven by combustion engines with provision for separate direct mechanical propulsion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K28/00—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions
- B60K2028/006—Safety devices for propulsion-unit control, specially adapted for, or arranged in, vehicles, e.g. preventing fuel supply or ignition in the event of potentially dangerous conditions disconnecting the electric power supply, e.g. the vehicle battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/12—Speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/10—Vehicle control parameters
- B60L2240/14—Acceleration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2240/00—Control parameters of input or output; Target parameters
- B60L2240/60—Navigation input
- B60L2240/66—Ambient conditions
- B60L2240/662—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/10—Emission reduction
- B60L2270/14—Emission reduction of noise
- B60L2270/145—Structure borne vibrations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
Definitions
- the invention relates to a method for operating a vehicle component of a vehicle by means of a control device as a function of an assessable at specifiable times safety status of the vehicle according to the preamble of claim 1. Furthermore, the invention relates to a control device for carrying out the method and a safety system with such a control device.
- sensors are provided in the vehicle or directly on the battery, by means of which it can be detected whether an external load on the vehicle or the battery acting load exceeds a critical threshold, and then turn off the battery.
- the German patent application DE 10 2010 054 463 A1 shows a vehicle battery with an electronic sensor having a position sensor for detecting a tilt angle of the vehicle and / or an acceleration sensor for detecting an acceleration acting on the vehicle, in particular in all three spatial axes, and / or a
- CONFIRMATION COPY Yaw rate sensor for detecting a rotation angle of the vehicle, wherein the vehicle battery can be switched off voltage when exceeding a respective threshold value, and wherein the sensor is arranged on the battery, so that damage to the battery can also be detected autonomously, eg during handling the battery for mounting, and the battery can also be disconnected autonomously de-energized when it is not yet mounted in the vehicle.
- the European patent application EP 0 322 599 A1 shows a safety device in a motor vehicle, which is designed to detect an accident situation in all three spatial directions and to shut off an internal combustion engine of the vehicle, the vehicle against displacement by engaging a parking brake secure and switch off the vehicle.
- the European patent application EP 1 683 698 A2 shows a safety system for controlling vehicle components of a vehicle with an electric motor in the event of an accident, in particular also in hybrid vehicles, wherein voltage sensors or acceleration sensors are provided, which are arranged redundantly in the pair close to each other and are designed, respectively to deliver a collision signal to a computing unit, which evaluates a collision state based on at least two collision signals and, if necessary, a shutdown of vehicle components, in particular the electric motor causes, the acceleration sensors capture acceleration in the direction of travel and one of the acceleration sensors eg may correspond to an airbag acceleration sensor, and due to the redundancy of the sensors, a faulty control of the vehicle components can be excluded.
- the US patent US 5,389,824 shows a system for switching off a power supply of an electric drive in an electrically driven vehicle, wherein a plurality of unidirectionally measuring acceleration sensors can be provided, which are coupled to an evaluation device and generate signals for certain acceleration values according to a probable accident state transmit the evaluation device, so that the electric drive can be switched off by means of a circuit breaker, and wherein for switching off also a driving condition of the vehicle, in particular In particular, a speed relative to an obstacle, with regard to a risk of collision can be considered.
- This object is achieved by a method having the features of patent claim 1 and by a control device and a safety system having the features of the respective independent patent claim.
- the invention is based on a method for operating a vehicle component of a vehicle by means of a control device as a function of a safety state of the vehicle which can be evaluated at predefinable times, the safety state being either "vehicle component safe” or “vehicle component or vehicle component unsafe”, with the steps:
- step d) evaluating the safety state by means of the control device; and e) depending on the safety status evaluated in step d): operating the vehicle component by means of the control device.
- the mentioned steps are further developed in that the acquisition of the respective measured value in step a) takes place with respect to a fixed spatial direction by detecting an effect on the vehicle with respect to a z-direction parallel to a vertical axis of the vehicle,
- step c) takes place with respect to a position of the respective sensor device on the vehicle by combining position data for the respective position with the respective measured value, wherein it is checked whether the respective measured value is above a predefinable threshold value for a load of the vehicle component lies in the z-direction.
- evaluating an action in the z-direction it is also possible, for example, to identify so-called under-riders, eg curbs, bollards, speed limitation thresholds, stones, in particular on country lanes, which are usually disregarded in the case of previously known vehicle safety systems.
- the vehicle component is a high-voltage battery.
- acceleration sensors are already known which can record measured values in all three spatial directions, these sensors do not provide any possibility of detecting influences especially on the vehicle from below, and they are also not designed for accelerating the vehicle to a center of mass of the vehicle component.
- the latter is inventively possible in that the position of the respective sensor device is taken into account, be it the position on the vehicle and / or the position relative to the vehicle component or directly to the vehicle component.
- the step c) provided after the acquisition of a measured value may comprise generating measured value data in order to enable an analysis of the safety state to be carried out if force or pulse measurement values of sensors already implemented on the vehicle are detected and for the analysis of the Safety state should be used.
- force or pulse measurement values of sensors already implemented on the vehicle are detected and for the analysis of the Safety state should be used.
- strain gauges or structure-borne noise sensors can also be counted for such sensors.
- an acceleration which can be more meaningful in the analysis of the safety state than the pulse values themselves can be determined from pulse measurement values with a time reference.
- Generation of the measurement value data most meaningful for the analysis of the safety state can be carried out by the sensor devices themselves if they are able to convert between individual physical quantities or parameters, but it can also be performed by the control device, in particular so that already implemented sensors without retrofitting or reconfiguration can be used.
- the generation of measured value data also requires that information about the absolute and / or relative position of the sensor devices be taken into account. This position can be used by the sensor device either be known or be transmitted, or the generation of measured value data takes place only in the control device in which all absolute / relative positions of the sensor devices can be stored.
- the operation in step e) includes a switch-off of the vehicle component for the "vehicle insecure" safety state when the vehicle component is switched in.
- the operation in a step e1) that is alternative to step e) can contribute to the "vehicle safe" safety state switched off vehicle component include switching on the vehicle component to make the vehicle in a changing state, the roadworthy again.
- the sensor means e.g. Acceleration sensors, pressure sensors, force sensors, pulse sensors or structure-borne noise sensors can be used.
- An action from below may e.g. be detected and evaluated via an acceleration in the z-direction, which is above a certain threshold, e.g. by overrunning a threshold or a curb too quickly.
- the threshold is defined specifically with respect to the z-direction in order to extend the evaluation of the safety state of the vehicle with respect to the vertical axis, which is usually focused on the x-y plane.
- Particularly relevant to vehicle safety is the detection of an impact from below on the vehicle, be it because the vehicle is being moved toward an object or because an object is being thrown against the vehicle from below.
- Too great an impact on the vehicle or the vehicle component in the z-direction can also arise because the vehicle is driven too fast over a ramp, e.g. in the downward leading entrance to an underground car park, and that while the vehicle is seated. In this case, the acceleration acts downward, and there is a risk of contact of the vehicle with a threshold and thus possibly damaging the vehicle component.
- an acceleration acting on the vehicle in the z-direction at the position of the sensor device can be evaluated in such a way that the acceleration on the vehicle Vehicle component at the position of the vehicle component acting resulting load is determined.
- the vehicle component can still operated be as if the threshold would not be exceeded if it is determined from the two acceleration values and the positions of the sensor devices that the acceleration at the position of the vehicle component is below the threshold value.
- the evaluation of the measurement results and the operation of the vehicle component can be made more practicable and also with improved accuracy.
- at least two of the sensor devices are arranged on an underside of the vehicle, in particular in the direction of travel in front of and behind a center point of the vehicle component, at a certain distance relative to the vehicle component.
- the position of a respective sensor device is preferably defined by a distance of the respective sensor device in the direction of travel corresponding to an x-direction to a center point of the vehicle component.
- different security parameters or sensor sizes are combined so that both e.g. Acceleration readings as well as pressure readings can be captured and evaluated.
- at least two different measured variables are detected in the same position in at least one of the sensor positions, e.g. an acceleration and a force or a pressure.
- the safety state can be defined via at least one safety parameter.
- the evaluation of the safety state by determining a value of the safety parameter thereby implies the position-related analysis of the effect on the vehicle as a function of the safety parameter.
- a sensor device arranged far away from the vehicle component supplies an acceleration value, which without position reference still has no significance for the acceleration acting on the vehicle component. If, however, a deformation is recorded on a support structure on which the vehicle component is also is fastened, then the position of the sensor device is not of the same importance, and the measured value can be used directly without consideration of the position under certain circumstances.
- the measured value data can correspond to the measured value itself. Nonetheless, a differentiation can also be made here, at least to the effect that the threshold value is defined as a function of the position of the deformation sensor, that is, for example, at a large distance, a lower threshold than at a small distance.
- the definition of the threshold values is to be defined with regard to the type, the material, the load capacity, etc. of the supporting structure, that is, taking into account the technical features of a particular vehicle.
- a measured value for a driving state parameter for evaluating a driving state of the vehicle is preferably detected, wherein the threshold value is a threshold value related to the driving state.
- the threshold value is a threshold value related to the driving state.
- the threshold value can be read out from a table which is specific in particular for a respective vehicle component or can be freely defined as a function of the driving condition, for example as a function of the vehicle speed, the ambient temperature and / or the temperature of the vehicle component, or of x and / or y.
- Direction acting on the vehicle accelerations, or of a load ie a total weight of the vehicle. This can be avoided that the vehicle component is switched off too fast or too late. Because at a very high load of the vehicle, a certain acceleration in the z-direction already lead to contact with the ground and thus the risk of damage to a vehicle component, which are still damped by the spring-damper system of the vehicle in a barely loaded vehicle can.
- the vehicle at high speed, the vehicle is sluggish (greater mass inertia) and a certain load or shock or acceleration in the z-direction may not be as well damped and / or cushioned as at a low speed. It is also to be expected that, at higher speeds, a certain acceleration in the z-direction will entail a greater potential for damage than with a given acceleration. struggle speed, just because in the event of a collision with an obstacle from below, the forces and impulses acting on the vehicle are greater. A ground contact at high speed, eg over 90 km / h, is expected to cause greater damage to the vehicle or the vehicle component than, for example, only 10 to 30 km / h.
- the position data can be provided together with the measured values from the respective sensor device and supplied to the control device, they can optionally also be stored in the control device or a vehicle system and the measured values are then automatically assigned to the position data, in particular via the respective inputs which the sensor devices are coupled to the control device.
- the position-related detection of the measured values also provides the advantage that existing sensor devices can be used for evaluating the safety state without having to rearrange them, ie even without having to arrange them directly on the vehicle component.
- a security system can be provided which can be used for a large number of different vehicles or vehicle platforms without having to reconfigure in detail with regard to a specific arrangement of the vehicle component.
- a vehicle battery may be arranged at different locations in a comparison between a plurality of vehicle types or configurations, without the security system having to be extensively adapted.
- the evaluation of the safety status at predeterminable times can be done e.g. regularly after a predeterminable time interval, ie continuously, or only when the driving state changes, or optionally also in dependence of predefined speed thresholds of a driving speed.
- the times may e.g. be predetermined by a clock of the control device. When setting the threshold value, this is preferably done when the driving state changes.
- the predeterminable time interval can be selected to be particularly small if the driving state changes greatly.
- the threshold value is also defined in relation to the detected measured variable.
- the threshold value can take into account not only the position but also the detected variable: at a detected acceleration, it may be of greater importance how far away the sensor device is from the component to be monitored than with a detected force.
- the threshold values may also differ from one another when the sensor devices are arranged in different positions on the underside of the vehicle component, in particular in the case where the vehicle components are differently sensitive with respect to the force effect at different locations.
- a consideration of the vehicle speed provides the advantage that it can be better recognized whether an action in the z-direction on a driving condition (eg, a movement of the vehicle when passing quickly through a depression) or on an action from below, eg an actual contact by an obstacle, for example in the evaluation of acceleration measured values.
- a driving condition eg, a movement of the vehicle when passing quickly through a depression
- an action from below eg an actual contact by an obstacle, for example in the evaluation of acceleration measured values.
- a certain acceleration in the z-direction can already be synonymous with an action from below, whereas at low speeds
- Contact with an obstacle is not necessarily present, in particular due to the more effective spring and / or damping effect of the suspension of the vehicle.
- the vehicle component may, for example, be more sensitive in an activated operating state than in a switched-off operating state, or be particularly sensitive depending on a specific operating temperature or its operating hours.
- the threshold value is determined by an amount for a force acting on the vehicle component, in particular from below, in the z direction and / or by an amount for one, in particular from below, in the z direction to the vehicle component defined impulse, wherein the force and / or the pulse is preferably detected in at least two positions by a respective arranged on a bottom of the vehicle and / or the vehicle component sensor device.
- so-called lower driver can be detected and evaluated, i. Collisions from below, e.g. with a run over stone.
- an effect by a bottom of the vehicle or the vehicle component abutting threshold can be well detected. Even a largely pulse-free action from below can be detected.
- a largely pulse-free action can e.g. in connection with a repair of the vehicle when the vehicle is lifted by a jack, and the jack e.g. accidentally brought directly to the vehicle component and not on a support structure of the vehicle to the plant.
- the safety parameter can also be defined via an acceleration acting on or in the vehicle against the z direction, ie via the acceleration values as such.
- the operation in step e) for the safety state “vehicle or vehicle component uncertain" with the vehicle component switched on comprises switching off the vehicle component and switching on the vehicle component for the safety state "vehicle or vehicle component safe” when the vehicle component is switched off.
- the vehicle can also be brought automatically into a roadworthy state again as soon as it is detected that an unsafe vehicle condition is not present (any more).
- the vehicle component is a high-voltage battery which is coupled to an electric drive for driving the vehicle, wherein the high-voltage battery is operated as a function of directionally and positionally evaluated measured values of at least two sensor devices arranged on an underside of the vehicle are, in particular in the direction of travel before and / or behind a center or center of mass of the high-voltage battery at a predetermined distance to the center or center of mass.
- the high-voltage battery is a high-voltage battery which is coupled to an electric drive for driving the vehicle, wherein the high-voltage battery is operated as a function of directionally and positionally evaluated measured values of at least two sensor devices arranged on an underside of the vehicle are, in particular in the direction of travel before and / or behind a center or center of mass of the high-voltage battery at a predetermined distance to the center or center of mass.
- an action on the high-voltage battery can be detected directly, be it a sudden action or an increasing force without a strong pulse, which leads, for example, to a deformation of the high-voltage battery.
- the plurality of sensor devices including an optional redundancy of the sensor devices (if different sensor devices each capture the same safety parameter), the detection can be done with good accuracy, and the evaluation of a punctiform impact, eg due to a run over stone, can be done more accurately.
- a position-dependent evaluation can also be carried out.
- the sensor devices detect, for example, an acceleration, it can be detected how a specific pulse on the high-voltage battery affects the center of gravity of the high-voltage battery and if the pulse can be damped, for example, by damped bearings of the high-voltage battery, in particular if it is only in an edge area on the high-voltage battery acts, or is already too high, especially because it acts precisely in the focus on the high-voltage battery.
- a control device for operating a vehicle component of a vehicle as a function of a safety state of the vehicle that can be evaluated at predefinable times wherein the safety state is either "vehicle or vehicle component safe” or “vehicle or vehicle component unsafe”
- the Control device with a switching device and with a plurality of sensor devices can be coupled, which are each designed to detect a measured value, and wherein the control device for evaluating the safety state from the respective measured value is formed
- control device is designed to detect the measured value as a function of direction and with reference to position data of a respective sensor device on the vehicle and to check whether the measured value is above a threshold value for a load of the vehicle component with respect to a z-direction is parallel to a vertical axis of the vehicle.
- a plurality of sensor devices each of which is designed to acquire a measured value
- the sensor devices are coupled to the control device and configured to detect the respective measured value as a function of a defined spatial direction, by acting on the vehicle with respect to a z-direction parallel Is detected to a vertical axis of the vehicle, and wherein the sensor means are each adapted to detect the respective measured value in dependence of a position of the respective sensor device on the vehicle and output position data to the position of the respective sensor device;
- a switching device coupled to the control device and the vehicle component
- control device is designed to actuate the switching device as a function of the safety state, in particular to switch it on or off.
- At least one of the sensor devices is a structure-borne sound sensor.
- the structure-borne sound sensor has a piezoelectric element, which is mounted in particular in a damping mass, and the piezoelectric element is coupled to a surface of the vehicle component, in particular via a membrane.
- the structure-borne sound sensor is provided at a lower to a floor on which the vehicle is standing or driving, facing surface of the vehicle component. In this way, an effect from below can be detected via the structure-borne noise, which is advantageous in particular with regard to the lightweight structures frequently used in connection with high-voltage batteries, in particular carbon fiber structures, since they pass sound well on account of their material properties (in particular hardness). The same applies to metallic structures.
- FIG. 1 is a schematic side view of a vehicle with a high-voltage battery, which has a safety system with a large number of sensors and a control device for carrying out a method according to an exemplary embodiment of the invention; a schematic side view of a vehicle with a high-voltage battery, which has a safety system with a plurality of integrated in the high-voltage battery sensors and a control device for carrying out a method according to an embodiment of the invention; in a schematic representation of the sequence of a method according to an embodiment of the invention for an on-vehicle component; and in a schematic representation of the sequence of a method according to an embodiment of the invention for a switched-off vehicle component.
- the vehicle 1 shows a vehicle 1 with a drive 2 and a vehicle component 2 a coupled to the drive 2, here a high-voltage battery 2 a.
- the vehicle 1 has a control device 10 which is coupled to the high-voltage battery 2 a as well as to a multiplicity of sensors 3, wherein each of the sensors 3 is designed to detect an acceleration at least in a z-direction according to the illustrated coordinate system, ie a vertical direction.
- the control device 10 is coupled to a switching device 11 or has this as a component, and vehicle components 2, 2 a can be operated via the switching device.
- the sensors 3 are designed to provide an acceleration tion in relation to all three spatial directions.
- the control device 10 and the sensors 3 are part of a safety system 100 of the vehicle 1, by means of which it can be avoided that the high-voltage component 2 a remains active in an unsafe condition of the vehicle 1 or the high-voltage component 2 a.
- the sensors 3 are all arranged on a lower side of the vehicle 1, which does not necessarily have to be the case. Rather, only a few of the sensors 3 may be provided on the underside of the vehicle.
- the advantage of the arrangement on the underside of the vehicle 1 is e.g. in that sensors 3 can be used which, in addition to the acceleration, can also detect an (imminent) contact or collision of the underside with a stone or similar obstacle, in particular optically and also before a collision.
- the control device 10 can cause a shutdown of the high-voltage battery 2 a before a collision.
- the sensors 3 are arranged in front of and behind a center M of the high-voltage battery 2 a when viewed in the direction of travel.
- the direction of travel here corresponds to a straight-ahead travel of the vehicle 1 in the x-direction, as shown.
- the sensors 3 are each arranged at a defined distance from the center M, wherein the distance is identified by the reference symbol "d" as an example for one of the sensors 3.
- the center M may also correspond to a center of mass of the vehicle component 2a. d "can be characterized on the one hand, the relative position with respect to the vehicle component 2a, on the other hand, the absolute position or the position relative to the vehicle, eg an on-board coordinate system.
- the arrangement on the underside also has the advantage that an acceleration which acts on the vehicle 1 from below is not dampened by deforming structural components of the vehicle 1, but can be detected directly at the location of the action.
- This makes it possible to operate the HV component 2a in a more precise manner, in particular as a function of a threshold value for the safety parameter, in particular for acceleration, which is predefined in particular for a specific HV component or variably fixed as a function of the driving state.
- the sensors 3 may also be embodied as structure-borne sound sensors which produce a shock or a touch detect the vehicle underside with an obstacle and allow depending on the operation of the vehicle component 2a.
- at least one sensor 3 is provided in the direction of travel before and optionally also behind the vehicle component 2 a on the underside of the vehicle 1.
- the sensors 3 are integrated into the high-voltage battery 2 a, and they are at least partially arranged on an underside of the high-voltage battery 2 a.
- a bottom impact e.g. a pulse, in particular an acceleration
- a falsification of measured values can be excluded by the direct measurement within or in the edge region of the high-voltage battery 2a.
- individual sensors 3 in the direction of travel are provided in front of and behind the high-voltage battery 2 a on the underside of the vehicle 1.
- the sensors 3 provided in or on the high-voltage battery 2a are also arranged in front of and behind a center M of the high-voltage battery 2a in the direction of travel.
- the sensors 3 are each arranged at a defined distance from the center M, wherein the distance is identified by the reference symbol "d" as an example for one of the sensors 3.
- the control device 10 of the security system 100 is coupled to a switching device 11 or has it as a component on, and the switching device 11 vehicle components 2, 2 a can be operated.
- FIG. 3 a shows a method for operating a switched-on vehicle component, which leads to switching off the vehicle component when the vehicle is in an unstable state.
- a measured value for a safety parameter is detected by means of at least one sensor device of the vehicle.
- the measured value data characterizing the measured value are generated by the sensor device, in particular a generation of a safety signal corresponding to the measured value by the sensor device.
- the measured value data, in particular the at least one safety signal are transmitted to a control device.
- the safety state is evaluated by determining a value of the safety parameter from the measured value data, in particular the at least one safety signal, by means of the control device.
- a query is made as to whether the state of the In a fifth step e), depending on the safety status evaluated in step d), the vehicle component is switched off by means of the control device, wherein the measured value is detected and evaluated with respect to a z-direction and the safety state of the vehicle is evaluated at predeterminable times, in particular in real time, according to a defined driving threshold of the vehicle.
- ⁇ br/> ⁇ br/> In FIG the method refers to an off-vehicle component and a query is made as to whether the condition of the vehicle is "safe" to cause the vehicle component to be turned on if affirmative.
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013001325.9A DE102013001325B4 (de) | 2013-01-26 | 2013-01-26 | Verfahren, Vorrichtung und System zum Betreiben einer Fahrzeugkomponente eines Fahrzeugs in Abhängigkeit eines Sicherheitszustands des Fahrzeugs |
PCT/EP2014/000164 WO2014114452A1 (de) | 2013-01-26 | 2014-01-23 | Verfahren, vorrichtung und system zum betreiben einer fahrzeugkomponente eines fahrzeugs in abhängigkeit eines sicherheitszustands des fahrzeugs |
Publications (2)
Publication Number | Publication Date |
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EP2948333A1 true EP2948333A1 (de) | 2015-12-02 |
EP2948333B1 EP2948333B1 (de) | 2018-03-14 |
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Application Number | Title | Priority Date | Filing Date |
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EP14702443.4A Not-in-force EP2948333B1 (de) | 2013-01-26 | 2014-01-23 | Verfahren, vorrichtung und system zum betreiben einer fahrzeugkomponente eines fahrzeugs in abhängigkeit eines sicherheitszustands des fahrzeugs |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2948333B1 (de) |
DE (1) | DE102013001325B4 (de) |
ES (1) | ES2665445T3 (de) |
WO (1) | WO2014114452A1 (de) |
Families Citing this family (4)
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DE102018129158B4 (de) * | 2018-11-20 | 2021-05-06 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Sicherheitsvorrichtung für eine Batterie |
DE102019213054A1 (de) * | 2019-08-29 | 2021-03-04 | Audi Ag | Verfahren zum Ermitteln einer potentiellen Schädigung einer Fahrzeugbatterie sowie Kraftfahrzeug mit einer Fahrzeugbatterie |
DE102019214100A1 (de) * | 2019-09-17 | 2021-03-18 | Zf Friedrichshafen Ag | Akustische Erkennung von Aufsetzern |
CN111382937A (zh) * | 2020-03-06 | 2020-07-07 | 广东工业大学 | 一种基于fsae赛车的安全状态评估处理方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3744264A1 (de) | 1987-12-24 | 1989-07-13 | Man Nutzfahrzeuge Gmbh | Sicherheitseinrichtung in einem kraftfahrzeug |
US5389824A (en) | 1992-03-17 | 1995-02-14 | Kabushiki Kaisha Equos Research | Power supply cut off apparatus |
JP2006182300A (ja) | 2004-12-28 | 2006-07-13 | Denso Corp | 車両用衝突安全システム |
DE102010054463B4 (de) | 2010-12-14 | 2024-03-14 | Volkswagen Ag | Fahrzeugbatterie mit elektronischem Sensor |
-
2013
- 2013-01-26 DE DE102013001325.9A patent/DE102013001325B4/de not_active Expired - Fee Related
-
2014
- 2014-01-23 ES ES14702443.4T patent/ES2665445T3/es active Active
- 2014-01-23 EP EP14702443.4A patent/EP2948333B1/de not_active Not-in-force
- 2014-01-23 WO PCT/EP2014/000164 patent/WO2014114452A1/de active Application Filing
Non-Patent Citations (1)
Title |
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See references of WO2014114452A1 * |
Also Published As
Publication number | Publication date |
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WO2014114452A1 (de) | 2014-07-31 |
DE102013001325A1 (de) | 2014-07-31 |
ES2665445T3 (es) | 2018-04-25 |
EP2948333B1 (de) | 2018-03-14 |
DE102013001325B4 (de) | 2017-10-12 |
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